
Lesson 7/31: Digital Read Push button, detecting magnetic field SunFounder Kit | Robojax
In this lesson, we will undertake three distinct projects utilizing the DigitalRead
feature of Arduino. First, we will explore the fundamental reasons why a push button is necessary when interacting with Arduino. Next, we'll learn to use a reed switch to detect magnetic fields. Finally, we will delve into the INPUT_PULLUP
feature of Arduino, which eliminates the need for an external resistor with push buttons, and we will also examine the potential problems that arise if a resistor is not used in such circuits.
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